Neptunite Vs Tantalite
Origin
USA
Australia, Brazil, Canada, Colombia, Madagascar, Zimbabwe
Color
Black, Red, Brown
Brown
Streak
Brown, Red
Brownish, Red, Black
For which Rashi?
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Planet
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Element of Planets
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Finger
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Ring Metal
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Energy
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Deities
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Not to wear with
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Powers
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Planetary
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Talisman
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Tenacity
Brittle
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Solubility
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Durability
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Specific Gravity
3.19-3.23
5.2
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{110} good
Good in one direction
Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Pleochroism
x=yellow-orange
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Dispersion
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Transparency
Translucent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Refractive Index
1.692-1.734
2.190-2.457
Optic Character
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Crystal System
monoclinic
Orthorhombic
Birefringence
0.0294-0.0452
0.083
Clarity
Translucent
TransparentWalter Schumann
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Neptunite Vs Tantalite Fracture
Fracture is an important parameter when you compare Neptunite and Tantalite Physical Properties. It is necessary to understand the significance of these properties, before you compare Neptunite Vs Tantalite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Neptunite is Brittle, Conchoidal, ConchoidalAnthony et al and Handbook of mineralogy (2001). Tantalite fracture is ConchoidalArthur Thomas, Gemstones (2009) and Subconchoidal.
Neptunite Vs Tantalite Luster
A primary knowledge about Neptunite vs Tantalite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Neptunite exhibits Vitreous luster. Tantalite, on other hand, exhibits Resinous luster.